package com.gg.entity;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data  //直接提供给你get set   toString
@NoArgsConstructor  //无参构造器
@AllArgsConstructor  //有参构造器
public class Student {
    private  String  sid ;
    private  String  username ;
    private  String  password ;
    private  Integer  sage ;

}
